Bevehsing gearing



' A 1,646,127 Oct' 18 1927 H. A. TUTTLE REVERS ING GEARING Filed March 15; 1923 5 Sheets-Sheet 1 (iff/708ml@V W.

H. A. TUTTLE REVERSING GEARING yOct. 1s, 1927,

Filed March 15. 1925 5 Sheets-Sheet 2 1,646,127 Oct. 18, 1927- H. A. TUTTLE REVERS ING GEARING Filed March l5. 1923 5 Sheets-Sheet 3 F'iled March 15. 1923 5 Sheets-Sheet 4 l 646,127 Oct 18 1927 H. ArTuTTuE REVERS ING GEARING Filed March l5. 1923 5 Sheets-Sheet 5 (aff/MLM@ ,25 ino' torque Vonl'yvvheii th Patented Oct. 18, 1927.

l HENRY A. TU'r'iLnor Ur'ron, MASSACHUSETTS.'

.nnvnnsme- GEARING.

Application led March 15., 1923. Serial No. 625,390.

i This .invention yrelatesV to reversinggearmg ot the typecoinprising aV driving shaft,L

a drivennsliah,gearing mechanism includ# ing planetary rearing elements adapted to b connect. saidsvafts for reverse drive and clutch ,vmecliani'sm. adapted to connect said shafts torforward drive. 4 y 1 In reversing gearing of the type set forth,

' it has been customary to arrange 'the clutch 1U mechanism so as to connect the planetary gearing elementsto said driving and driven shaft-s against rotation independently thereof whereby to lock said fearing and thereby secure forward drive.- ith thisl arrangenient,V the drive is through the lockedgearing elements, and the driving torque' is transmitted tlirouglithe teeth of thegears.

It is an 0b]ect of this invention to provide a reversing gearing with clutching. iiieclianisin so arranged as to connect the driving and driven shafts directly for forward drive, vand exclude the gearing elements. With this arrangement, the gear-ing elements arebronght into effect to transmitthe drivb e reversing gearing is set lfor reverse drive y In the usual ltype of reversing gearing it is customary to supportcertain of the gearing elements on .i1-.freely rotatable carrier and hold the. carrier against rotation by suitable brake mechanism to secure reverse drive. i i It is a 'further object of this invention to provide a gearfcarriertvhioh is fixed to vand adapted to rotate with o'ne of said shafts, as the driving shaft, y.find a freely rotatable gear member arranged in drivingconnection with gearing eleiide'nts carried by said carrier and means torestrain the gear member 40 freinv rotation .whereby Ato secure reverse drive. The clutchinechanism in n reversing gearing may include a plurality of co-acting clutch plates. which are usually flat Vdiscs or rings. Theclutch, so arranged,V may have .a tendency' to remain in clutched condition v When Ithe actuating mechanism isoperated to release the pressure 4on the clutch plates, due mainly to' the viscosity-ofiE Ythe lubricati ing oil-film on the clutch plates. Y, It' isa further object of this/ inventioii-to provide the clutch mechanism with cofacting 'clutch vplates some of whiehfhnve selffcontainedspring elements which are arranged to act uponadjacent clutch'y plates whereby 55 to effect `the separation of the plates when the elutchin pressure is relieved. i

A yetturt er object is to providea Eclutch platen/1th means to reducelits tendency'. to buckle or warp. Y.

A',further Objectis generally to improve the construction' and operation of reversing gearing.l lrain features oithisinventionare descri e in my coen in@ a vlication Serial e No.' 625,38.9, filed arch l5, y f 5 Fig'. 1 isa sectional elevation throu h a reversing. gearing embodying the inven ion. F-1g.2 1s a view l similar to Fig. 1 showing a inodiedform'oi reversing gearing.`

I4-1g. 3 isa section along line 3- 43 of Fig. 1.

Fig.'` 4 isa section along line 4.-4 of Fio'.n l. i i

Fig. 5 Vis a section along line 5-5 of 75 im 2.

'Figs 6 and 7 are'sec'tlonal details illustrating forms of casing constructions' to be retei'red to.

Fig. is a sectional detail of the clutch s0 mechanism.

Fig. 9' is a front view of a clutch plate.

Fig. 10 is asectionalong line 10-10'of Fig. 9. A

Fig. 11 is a developed Sectional `.detail a5 along line 1.111 ofFig. 2.

F-ig. '12 is an enlarged sectional detail illustrating vmore particularly the curved formation of the thrust.- ring and' pressureadJnsting member.

. Ashere shown, the reversing' gearing is adapted to connect the drivin shaft land driven .shaft l1 for forwar and reverse drive. In accordance .with the invention, the reversing gea-ring may include a casing g5 12, alsocoinprising a gear-cage or carrier, fixed' to one of saidfshaftaes the driving shaft 10, and enclose and carry theplanetary gearing elements. The casing may have various `constructions for the` purpose.;` In l wo Fig. 1, the casing includes a plate 13 whichv forms an end Wall of the casing and -is or may be Fixed thereto by thebol'tsla. A hub 15 may be formed integrally and centrally Wit-h said plate 13 and have a recess therein 105 in which the driving shaft is received and fixed, or the drivingjshaft and end plate, and consequently the casing-may be secured totobc', n'eitect, integralwith the 'casing undrotate with'ity'andsaid'hub is adapted'to extend beyond the endwa-ll 17 and .form an extension'o'f the drivin 'slutft at the rear of the dea'ri'ng elements. ie .extended end f lsaitilj nb is adapted to carry elements ofthe "eluteh'mecha'nism 'as willhereinafter be Vdescribed. Said hub18 may be secured'to the casing in 'any suitable 'mannen In Fig. 1 sid'hb lis 'formed orprovidedwith 'an integral and 'radially .outstandingange '19 which 'is vsecured :by suitable means, as the boltsfO;toanfinternal VHan-ge 21 of the casin'g,whereby to connect said h u'bhxedly to the casing." I'Fig. 7 illustrates this forni of connectionbetweentlie'flange 19 and casing.

Said flange is or may be formed with aper tures4 22 therethrough adapted toreceive pinion gears ofthe planetary` gearing element.

'In'FigfGjthe casing is 'integrally formed With-the inwardly directed end wall 19. and the' hub 18'is integral with said end -wali and easing.` 'Inthis instance, the iange or wail 17, 'corresponding to the flange or wall 17 of Fig. 1, is a separate member and is bolted or otherwise secured {ixcdly to the casing .in anysitable manne-r, as bythe bolts 24. VIn Fig. 2 the hub 18'is integralb7 or 'otherwise OrniedWth the radially outwardly extended arms'lb which are the equivalent ofthe flange 19of Fifr. .1. 'Said arms are or may be vsecuredxetiiy to ne ena wsu 117 or sie 'casing bytlie'bolts'Q; and' the spacers'27 osed onsaidlioltsi between the armsl and en wall serve to maintain the arms `in spacedrelaton with the end wall and'provde. a space ,therebetween4 in which pinion gears ofthcplaneta'rv gearing element are adapted to be received'.

A. spur gear 3Q is fixed to the driven shaft 1`1. a.n'ii disposed in saidcasingbetween the inner endet thehub '18 and the end plate ol the casing. The fend portion 11 of said drivenshaft-may be'reduced i-ndiameter and be rotatablyre'ceived in a bearing v1'5" of the -hb loof said end plate 13. Said spur gear is adapted tonme'shwith-pinion gears carried 'by the casing and be Vdriven thereby when the reversing gearing is set for reverse drive.

-Said pinion gears are or niaybe rotatably supported on said pins 16 which are extended between and 'carried by the end walls 13 and 17 of the casing. Preferably three sets of pinion gears are provided, as are hen;1 shown,valthough the exact number of sets is a-rnatter of choice.

The pinion gears may comprise the large pinion gears 35 Which-are adapted to inesh with and drive the spur gear 3() and the smallpinion gears 31 which are arranged beside said large pinion gears and are integrally connected:therewith7 or they may be otherwise connected whereby to rotate together. Saidsmall pinion gears are orinay be contained infthatportion olthe casingbetween theendwall 17 andthe-liange 19, or equivalent` of t-he hub 1'8. vThe arrangement o-pinion gea-rs of different diameters p'rovides'meansto obtain a reverse speed of rotation of'the driven shaft which may be any-desired amount by'properly selecting the diameter of the various gears.

The gears 35 and 31 and the casing 12 constitute aplanetary gearing element by which the driven shaft. may be driven in a directio-n reversed from the direction of rotation of the driving shaft. It will be noted that when said casing 12 is rotated with the small gears '31 arranged in driving engagement; with a. tixedly supported spur gear, said gears and :casing will 'drive the driven shaft, through thespur'gear 30 lixed to said shaft in Ythe reverse direction.

For this purpose, a spur gear 40 is rotatably supported on suitable supporting means as the hub 18ct the casing and arranged in mesh with the small 'pinion gears 31 and means are orinay be provided to hold said spur gear against rotation, whereby to condition "the gearing for reverse drive, or release said gear for rotation, whereby to place the gearing in neutral condition. in which condition the driven shaft is free from positive driving connection with the driving shaft, or to permit-'the clutch mechanism to be operated for directdrive.

Various means may be provided by which said gear 40 may be held'froni rotation and released for rotation. v'In Fig. 1, said gear is or may be formed with anl integral flange. 41 whichextends outwardly beside the endwall 17 of the casing and'terininates in the drum 42 which is adapted to be engaged by a station'arily supportedibrake band 43 or equivalent'nieans whercby'to restrain said gear 40 from rotation. In Fig. 2, the drum 42 corresponding to the drum-42 is formed with the inwardly directed iiange '41, corresponding to the {iange :41. Said flange 41 is or may be formed with teeth 44 which' may be of internal gear-tooth formation vand which engage and mesh with the teeth of the spur geni' 40, whereby -t-o connect said drum and gear ixedly against independent rot-ation. It isclear that when said brake band 4.3 is contracted into engagement with said Hill .pinio'n gears. 3l may be rotated bysaid gear as the easing isi-evolved, whereby to eiiect the reverse rotation of the driven. sha ft.

Theclutch mechanism.y bywhich forward drive-may be secured, is disposed at' the rear end of thecusing 12 andmavconiprise a set of` clutchplates carried by the extended end of the hub 18 of the casing and a. co-acting set of clutch v['Jlates y51 carried by thev driven shaft 11. Said clutch plates 50 may be secured directly inconnection with said hub18 or they may be carried by the ring 52, as shown in' Fig. 1, and said ring may bexed tosaidY hub in any suitable manner, as. by the key 53. The connection between said rin`g52 and the clutch plates 50 may include spur gear teeth 54 formed on the pe- Said c'luteh -plat-es 50` riphery of .said-ring. may be formed -or provided with teeth 55 which may be of internal gear tooth forma.- tionand which; are adapted to mesh and be axially movable in engagement withvthe spur gear. teeth o'f-said ring 52.- The set of .clutch plates 51 may lbe carried by a carrier 57 which may bedisp'osed With-in the drum 42. Said earner may be rovided -oii its-*inner face with` teeth 58W ich `may have an in'- ternal .gear tooth formation and said clutch plates 51 may .have teeth.59` on the outer periphery thereofpwliich have ,external or spur gear-tooth formation; and the teeth of said clutch and be slidable axially tact.with'tlie.teeth of said carrier.'

- The-clutch v'plates are adapted to be moved axial-.ly into 'clutching'engagement and said carrier Vmay have the inwardly directed wall 57?. adapted to support the 'clutch rplates against the clutch-engaging ressure. Said carrier 57 is or. may be fixe to the driven shaft bysuitable meanswhich may. include the hub 60 which latter is or may be xed to `.the 1' driven shaft y' against .both .axial `and l.im

rotary v movement an outwardly directed ange 62,- and the clutch plate-carrier may be ixedly secured thereto bysiiitable means, as the 'bolts 63.- The-cluteh mechanism may'inelude a pressure plate in the forni of a ring 64 which is 'disposedI at: the rear end of the sets of clutch plates and is adapted to be moved forwardlyy to eii'ect. the-clutching engagement of the' l-iub18 is'xed to `and serves as an extension plates l are'adapted to mesh with While-in driving conmay separate .ranged as toensure the independently thereof. Said hub may be formed cr-provided with shaft, the arrangement is such that-.the driven shaft.' is connected directly'to the driving shaft -for forward drive,

and the gearing-elements are excluded :from

the driving connections.

A The clutch actuating mechanism `illustrated in Fig'. l includes a plurality of levers 0I which are pivote-d vat 7l to a thrust ring 72 which latterencircles said hub 60 and is Vor may be connected vfor arial movement therewith but against rotation independently thereof by suitable means as the-key T3 which is loosely. received iii the groove 74 ofsaid ring. Said leve1s70 are ormay he formed with the Cain faces 75 which are adapted to engage and bear against the exposed ends: of said .pins 65,' lwhereby to a'ctuate the clutch. Said levers are' or may be provided with bifurcated. end -portions 76, and links 77v ma be received between and pivoted to said lureations by-means .ofthe pins 7S. The inner 'ends otsaid. links 7'1" are or may be pivoted on pins 78.whieh are carried by ears Tf) of a .thrust sleeve `80. Links 8l may bepivotcd to said pins 71 o-.said thrust ring 72 and said links may be provided .with elongatedxslots 82 in which the pins T8 carried -by -said thrust sleeve 8O are received. The ears 79 of said thrust sleeve and said links T7 cooperate to forni toggle members by which the clutch isfactuated adapted toy restrict the movement of said.

thrust sleeve and fthe inovementmof said toggle member ebeyond substantially oncentei' and clutch-set position.

When. the clutch is released, upon movement 'of the thrust sleeve 80 inwardly, .the levers 70 may of the pressure ring 64 and the clutch -plates tlieclutchplates may be 'so-.formed and aras will `be hereinafter described.. Means'may beprovided to ensure. the movementz'of the pressure ring froml forcible engagement with the clutch plates- Said 4means may comprise pins 85, see Fig. 8, which are carried Vby said pressure ring and .which extend slidably through apertures in the-flange 62 of the clutch casing and bearconipression springs S6 at their outer ends which serve to retract said pressure ring when the clutchengaging pressure on said ring' is removed. Said pins 85 may serve also-as guiding and supportingmeans for said pressure ring.

Means are or may be provided vto forni an abutment adapted izo-support the thrust ring 72 against the clutchengaging pressure and alsol to adjust .said .ring axially. on said hub 60, whereby to vary-4 the clutch engaging separation thereof,V

leo

becoinefree from the pins by. their` inherent' resiliency, 4or

pressure and compensate for wear-between the clutch plates and in. the clutch actuating mechanism.. Said means may comprise the internally 'screw-threaded pressure-adjusting v 9'0- is preferably provided with a spherically-shaped. inner face 9()a and said thrust ring 72 is preferably formed with a complementary shaped engaging fac-e. -Said ring 90 is' adapted Ato be adjusted axially' by a rotar-y movement thereof on said hub whereby to' vary the clutch engaging pressure in -a manner that may be readily. understood.

Itffis 'to be noted that, by reason of the complementary spherically-shaped faces on said' rings 'I2-and 90, provision is inadefor the automatic adjustment and balance of the clutching. pressure volsaid links for the reason that, if elink 70 should exert an increased and thereby unbalanced pressure r 72 will bc moved laterall-y' von its-s hericiil sea-t on said ringl 90 whereby to' ecrease the leveragel of the other links 70 on their respective pins and equalize the pressure.

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Means may be provided to lock said ring in. adjustedposition and said means may incl-nde aA spring-pressed latch 91 which is or .may be pivotally supported on the pin .92, which latter may be carried by the ears -93v extended from the periphery of the thrust ring. 72. Said latch is adapted to be spring-pressed removably i-nto notches 5 )4 which arel formed in the periphery of said adjusting ring 90 whereby to locksaid ring removably intol fixed position relative to the thrust vring 7 2;

The Aclutch 4actuating mechanism herewith described is also described inmy above named cio-pending application. u

Said'thrust sleeve 80 may be formed' with an annular groove 95 in whichai'iiig 96 is or may be loosely received and: a- Apivoted operating handle 97 maybe connected with said' ring-whereby to move s aid thrust sleeve axially andset the reversi-ng gearingfor forward' drive.

Y Bra-ke actuating mechanism for reverse drive' may include the bar 98 -which may beconnected with the operating .handle in any suitable manner not shown in Fig. 1. Said bar 98 may have slidable cam-engage'- ment with the ends ot the brake band in a more' or less usual manner whereby a movenient of said bar in one direction, as toward the right7 Fig. 1, serves to contract the band about the drum 42 and set the' gearing for reversel drive, and a movement 1n the opposite directionserves to expand the brake band and cause the gearing elements to be inoperative. In the inid-position-of the operating handle both reverse and forward driv'e'-mechanisms-1am' adapted to'. be disengaged and thev gearing may be in neutral'V condition with the driven shaft free from positive connection with the driving shaft.

Fig. 2 illustrates :t modified fornil of clutch mechanism. The driving clutch plates 100 are or may be carried by and indriving engagement with internal gear teeth 101 of a clutch plate carrier 102 und saidv carrier is ormay he Jformed with the wall 103 und the hub 1011 and by which hitter the carrier is fixed tol and driven by the hub 1S, of the easing 12. A second carrier 105, for the d'rivei'isot of clutch plates 106, is or may he received within the lirst carrier and is or may be rotatably supported' on the hub 104 of saidl irst'- carrier. Said second cari-ier may be formed with spur gear teeth with which the clutch plates 106 are in sliding engagement. Said carrier is or may provid:- cd with an outstanding `flange 107 which is adapted to serveas a pressure member bctween. which and the wall- 103v of the tirs-t carrier the clutch plut-es are adapted to he compressed, whereby to attuatethe clutch.

The clutch actuating mechanism includes means automatically to compensate for wear between the` clutch plates and increase the clutch engaging pressure if and when there is a. relative slipping between the two sets of clutch plates; and said' means is or may be e5- sentially the` suine as described in my patent No. 1.392.984, issued October' 11', 1921. Said means muy include a hub 110 which is slidable on the driven shaft 11 but. li'xedj aga-inst rotary movement thereon by suitable means as the keys111. Said hub is foiiiied with a flange 1112 which may be provided with a plurality of wedge-shaped teeth 113, more clearly illustrated in Fig. l2. The flange 107 of the carrier 105 is or may be toi-medwith siinilaily shuped'teeth 11sL whichnre adapted to enter the interdeiital spaces betweeiiland engage theteetii 113, see Fig. 11. The clutch engaging pressure is adapted to be' transmitted through the-.teeth 1:13 and 1111 and, if slipping tends to take place between the clutch plates, the teeth 1114 tend to ride on the inclined faces' ot the teeth 113 n-'hcreiby an increased'pressure will be exerted on the Clutch plates and prevent further slippingr therebetween. When the clutch is in operated position, the teeth 113 and 1111 are adapted to be entirely disengaged und the cari-ier may rotate freely.

'lhe arrangement oi' clutch mechanism illustrated iii `Fig. 2 is such that.. in reverse drive and neutral conditions o1 the gearing, the clutch plat'e carrier 105 and the set of clutch plates carried thereby is free from positive drivingeiigngement with any rot-:iting component of the gearing', whereby the dragging eectbetween the clutch plates in reverse drive and neutral is 'obviated The act-uatingmechanism for said hub 110 may include the bell-crank levers which are pivotally connected to ears 121 extend lltl vers are pivoted on ed rearwardly from thefliang'e 112 of said hub. The short arms of said bell-crank lethrust `ring123. The long arms of said levers; are or ma be biureated and links124 may be` pivotal y connected thereto. The innei ends- .of said links may be pivoted on pins I ina manner similar to that described in conq nection with the links8l ot Fig. 1.

VSaid thrust ring 123 is or may beI free. for` axialmpvement on the-driven shaft 11l but is" iixed lagainst.rotation thereon and the means for e'ecting this result may include slots 130 in said ring in which said keys 111 are loosely received. Said thrust rin 123 is adapted to be supported against tliet rust thereon in the clutch actuating operation by the pressure-adjusting ring 132 which latter .is or may be adjustably screw-threaded on the'exf te'rn'a'llyl screrw-threaded portion 133 of the driven shaft. Said ring 132 isV adapted to vbe received betweenthe thrust ringvand: alock ring 134 and when said thrust and lock rings are clamped together in any suitablefmanner with the adjusting ring 132 therebetween, said adjustingring is held fast in adjusted position. i

In a reversing gearing having clutch-mech` .anism including clutch platesto secure for,-

warddrive there'is a :tendency for v the clutch. plates to adhere together, even when the' pressure thereon is released, due mainly to the viscosity of the lmoflubrieating oil on the contacting surfaces of the plates. The adhereney of the clutch plates is undesirable, especially with the forni `of clutch vmeshanism illustrated in Fig. 1., as it mayl result in a ldrag between the plates and aeonsequent loss, ot-power and also,v afl-ack oli positive disconnection between the driving and driven shafts.

A further object of this invention listo provide a reversing gearing-having -clutch plates forined.with resilientV elements ar-4 ranged t0 bear againstA adjacent clutch plates and act effectively to move said plates axially. and'separate them when the clutch engaging lpressure is released, although said clements areV adapted .to yield readily to the clutchingpressurewhereby to permit .theeffective engagement of the clutchl plates.

The usual type of clutch plate,.compris inga ilat dise or ring. has a' tendency to buckle irl-use. due mainly to the i'low or'displaclement of metal in the dise under the 'clutching pressure andV the' driving torque. and the invention further contemplates means to reduce the buckling effect. Figs. 9 and 1 0-illustrate a -elutc-h platearranged in accordance with these. features of the inveiitletl. -l'Vliile cliiteh'plates of .both cosjste' pins 122 carried by the.

; are clear of eachother ling.

A51 may ery and llor this purpose 'has -the external gear teeth "59 forined in its outer edge.. 'The clutch plate here illustrated 4 is one of the clutch platcscont'ained in the'gearing illus' trated in Fig. l, .although it may well be a clutch plate F or the purpose of .providing the clutch plate Withsel'flcontained siring elenients.

the clutch plate is or may4 e formed with the pairs of 4' relatively closely spaced and preferably circular apertures 140 within the4 oundaries of and adjacent manent set singularly to the planeof the f clutch plate as illustrated in Fig. 10 whereby edge portions of vsaid teeth are caused to proiect laterally on o posi'te sides of said plate.

instance, said?) resilient teeth engage y and force the adjacent clutch plates a'xiallyto assumes position wherein the clutch plates raging 'pressure` is not applied. Only the' -clutch .plates of oneset need be thus ar} clutch-engaging pressure ranged. When the is applied to the clutch plates, thev teeth 142 are adapted to yield and liex inwardly.

into substantial parallelism the plate and permitthe become effectively engaged.

As above stated, with use, the usual solid clutch plate may buckle due to a fiow .under the with v the body of clutch plates to or ,displacement of` nietal therein driving'toi'q'ue, and .the clutch plate 51, is provided For this purpose, the clutch, plate .hev formed with' a plurality of slotsV 145 of substantial width therethrough and said slots niay extend from the innerperipliery oi .the clutch plate to a pointedjacent its outer periphery and terminate preferably in circularly formed, apertures illustrated in Fig. 2.

the inner pei, ripher-y and slots', 1.41 extended from the re- 140 to the in-l ment provides;

portions 143.

When clutch p ates'th'us formed' are arranged in sets as illustrated in Fig'. y1,.f oi

vwhen the clutch-enwith means to reducefsaid buckloo- 146 wherebyto separate the clutch plate into a plurality of sections 147 connected only at their outer perinheres. Said slots may extendi substantially across the eontactffaees of the clutch plate.. Preferably the clutch plate is provided 'with a plurality ofsuch sections each oi which is or. maybe of.' relatively small angulargextent. As thu'sarranged. while the 'driving torque may cause a displacementfof metal in a circular path in said sections 147, the meta] will beforced into said slots 14.5 and said slots are adapted to be of substantialfwidth t'v'l'iib".

receive this :metal withmit .bseefaisgallea von' said casing and Dfrie to the relatively small angular extent ofthe section, the-displacement of metal in ea'ch'section-h'as no appreciable effect in distorting the sections.

Clutch plates arranged to be sup )oi-ted and driven' at thc inner periphery t ereof.

may also b'e' arranged as above set forth.

The'v lconstructions here slioivn may be otherwise modified vvithout departing from the spirit of the invention.

'1L Reversing gearing comprising the combination of a driving shaft, a. 'driven shaft, gearingv mechanism adapted to connect said sli'a'fts for'reverse drive 'including a casing l' j tosaiddriving shaft,.a gear fivedto said' driven shaft, gears carried by said casing: some ofvvhich mesh .with the gear of ssi-iddriven shaft, a control gear rotatable on said casiiig and meshing with some of said" casing'vgea'rs, nieans'to hold said control: gear'statioiiai'y for reverse drive, and clu'tc'h 'mechanism arranged to connect sind shafts directly" and exclude the gearing mechanism' for forward drive..

' '2L Reversing" gearing comprising the combination of a'driviiig shaft, a. driven sha-ft, gearing mechanism adapt-ed toxvconriect said sliafls' for reverse drive inc-hiding a-casing fi'x'e'd'to said driving sha t, a gear fined to said diiiv'en shaft, gears'carrie'd by said casing some of. which .mesh with the gearl of said driven shaft, a control gear rota-table meshing with. some of s'id'casinggcars, means to hold said control'I gear stationary for reverse drive, and clii'tch mechanism arranged to connect said sh'afts directly an d .exclude the gearing'mechanism for. forward drive comprising means to" connect f said casing in driving relation witlisaid driven shaft.

3.'.Rvcrsing gearing comprising the com! b'ination of aligned and contiguous driving and driven shafts, gearing mechanism adapted` to connect said shafts Vfor reverse drive including. aca-sing l I aridiextend dlo've'r and rotatably supported Oii said driven shaft, and clutch mechanism adapted to connect' said shafts directly and eircliide said gearing. mechanism including co-'acting clutch membersv carried by said casino'r and `driven shaft and disposed about. sai'dr'iven shaft.

4; ilite'ieifsing gearing comprising the 'c olin biiiation of'aligned and contiguons driving and' driven shafts, gearing mechanism adapted'to. connect said shafts for reverse drive inclndiig a casing fixed to said driving shaft e'i'rt'eniied' over and rotatablysupported on said' driven shaft, and clutch mechanism dhp-ted" to. 'connect sii-id shafts directly and e'ilndesaid gearing mechanism including co'a'cting 4clutch .members driven by said difivingjand driven shafts'.

5'.' Reversinggearing: comprising the oomfixedto saidfdi'iv'ing shaft 1 sii-ene? bination of a` driving shaft. a driven shaft, gearing adapted to connect said shafts for reverse drive comprising ii gear fixed to the driven shaft, planetary gearing elements carried by and rotatable with the driving Shaft including pinion gears meshing with the gear on said driven shaft, actuating mechanism for said gearing mechanism iiicludiiig a rotatably supported gea-r element associated with said planetary gearing ele ments, means to hold said gear element fixed against rotation, clutch mechanism arranged to connect said shafts directly and exclude said gearing for forward drive, and means extended'througli said gear element connecting'said clutch mechanism ivith said driving shaft.

6. Gearing mechanism comprising the coinbiiiation of a driving shaft, a.. driven shaft, a gear fixed to said driven shaft, a. gearcarrier fixed to said drivingr shaft, planetary gearing elements carried by said carrier including rotatably supported pinion gears meshing with' the gear of said driven shaft., means including ii normally free control gear rotatable on. said gear-carrier and disposed Within and meshing with said gearing elcinents to drive said driven shaft i'ovcisclv, and clutch mechanism iii-ranged to connect said shafts directly and exclude said gear ing for forward drive.

i. Gearing mechanism comprising thc coinliiiiat-ioii of a driving shaft, a, driven shaft., a casing carried by said shafts and fixed to said driving shaft, a, gear fixed to said driven shaft, planetary. gearing elements carried by said casing in mesh with said gear, a control gear loosely mounted on said casing in mesh with said gearing elements., a.. brake drnin connected \i'ith said cont-rol gear to hold it against rotation for reverso drive, clutch )lates fixed t0 said casing and disposed bcsi e said control gear` and cooperating clutch plates connected with said driven shaft.

.8. Reversing gearing comprising the coin- 'biiiation-of a driving shaft, a driven shaft, gearing mechanism adapted to connect'y said shafts for reverse drive comprising a casing fixed to'and rotatable ivith said driving shaft a spul' gear fixed to said driven shaft, a Spur gear rotatably supported by said casing, rotatable pinion gears carried by said casing adaptedto be revolved about and in eirgageinentfvvith'said spur gears, brake mechanismarranged to hold said rotatably supported gear fixed against rotation, and clutch mechanism arranged to connect said shafts directly for forward drive and exclude said gearing, comprising co-actiiig clutch members carried and driven directly" by said casing and driven shaft.

9. Reversing gearing comprising the conibination of a driving shaft, a. driven shaft, gearing mechanism adapted to connect said llfl shafts for'reve-rsedrive c'oiiiprisinor afcasing' lixed to and rotatable with said i drivin shaft having an extension in which said driven shaft isfrotatable, aspnr gear fixed to 'said driven shaft,=a. spur gear rotatablysupported. on sagid easing extension, pinion gears rotatably supported l"in -said Casin and adapted to jbe'.revo1ifed about and in en ga-gement with said spur gears, brake mechanism arranged Eto hold said rotatably sii'p-V ported spur gear-:fixed 'against rotation, and clutch mechanism adapted-to connect said shaftsdirectly tor i forward drive :and veirclude. said gearing comprising co-acting clutch rn'ienibersfcarried and driven directly by said casing-extension and-driven shaft.

10. Reversing: gearing comprisino" the combination ofi-'a driving si'haft', a riven shaft, gearing mechanism adapted to conneetsaid shafts for reverse drive comprising a easing fixed to and rotatable with said driving shaftrhaving an extension in which said: driven shaft is rotatable, a spur gear fixed to saidldriven shaft, a spur gear rotatafbly supported on said casing extension,

pinion --gears lrotatably supported in saidV casing and adapted to be revolved about and in engagement with said spur gears, said rotatably supported 'spur gear having an :innular drum, and brake mechanism arranged to engage' said drum hold said gear against rotation, and .clutch mechanism adapted lo connect said shaftsv directly for .forivard drive and exclude said gearing comprising comet-ing clutch Ymemberscarried and driven directly byv said easing-extension andl driven shaft. i

' 11. Reversing gearing 'comprising theeombinati'oneta-driving casing, a driven sha-ft, said casing having two compartments and an' extensionin '.w'hicli 'said driven s hatt is Krotatably supported, a spur gear arraingigedA iii oneof said compartments and fixed to said driven sha-ft, a spur gear disposed in and extended beyond .said other compartment and rotatably supported on said casingextension, said latter gear having an annularv brake drum, pinion gears rotatably supportedby saidbasing and adapted'to'be rei-iolvedabout and in engagement with said spur gears, brake mechanism adapted to engage saiddruni to`hold said rotatably supported gear against rotation und set the gearing orreverse drive. and cliit-ch mechanism adapted to connect-said easing and driven shaft directly for forward drive'and exclude said gea-ring. comprising .co-acting clutch'- members carried and driven directly by said casing-extension vand driven shaft.

12. Reversin gearing comprising the combination o av driving casing, a riven shaft, Asaid casing having i two compartments andan extension in which said driven shaft is rotatably supported, a spur gear arranged in one of said compartments andrixed to said driven shaft'` a-spur tended beyond said other compartment and rotatably supported on said 'easing-extension, said latter gear having an. annulargear disposed in and exdrinnen brake mechanism adapted teengage .f aidbrake drum-and hold' said rotatably supported gea'raganst. rotation,'whereby to set the gearing for reverse drive, and clutch mechanismr adapted to connect said shafts' directly for forward drive andexclude said gearing comprising feo-ac-tinoV clutelifmembers cariied'nnd driven directly by said casing-extension and driven shaft.

v13. Reversing gearing comprisin the combination of a driving casing, it. riven shafhf'sa'id 4casing having an4 extension ini which said driven-.shaft is rotatable,"a spur gear 'disposed in said easing. and fixed' to said driven shaft, a spur gear rotatably supported on .said y easing-extension, pinion gears rotatably supported by said adapted to be revolved about and, engage said spur gears, said rotatably supported spur gear having a brake dru'm carried by it, and brake mechanism adapted .toengage said brake drum and hold Vsaid gear against rotation, vwhereby t o set the gearing vfor reverse drive, and vclutch mechanism' adapted to conneetqsaid driving casing and driven shaft for. forward drive comprising a clutch easing fixed to said drivenv shaft,A clutch plates disposed 'within and driven Iby said combination vof a driving easing, a vdriven shaft,V saidcasing having'- an extension, in

which said driven shaft is rotatable, a spur.

gear disposed in said casing 'and fixed to said driven shaft-, a spiirgear lrotatcasing and ably supported on said easing-extension,.-

pi'nion gears rotatably.supported by said casing and adapted -tovbe revolved about and engageA said' spur gears, said rotaia-- ably supported spur gear having a brake drum carriedby it, and brake mechanism adapted to-enga-ge sii-id brake drum and .hold

said gear against rotation, whereby .to set the gearing for reverse drive, and -elutcli y mechanism adapted to connect said driving casing and driven shaft for. forward drive comprising aclutch casingfiXed.- tol said driven shaft and disposed within said brake drum` clutch plates disposed vWithin .and driven by said easing, and eo-.aeting clutch plates also'disposed within said casing and drivenby. the extension of saiddriving casing.

15. Reversing gearing comprising the combination of a driving shaft', a driven shaft, a ear casing fixed to said driving shaft having gear elements adapted to conneet said shafts for reverse drive, a brake drum rotatably supported on 'an extension of the casing hav-ing operative connection with said gearing elements, bra-ke mechanism adaptedto hold said brake` drum against ro- -tation to set-the gearing for reverse drive, and? clutch mechanism adaptedto connect saidshafts for forward drive comprising co- Vacting clutch-members carried and driven-by said'` gear casing extension' and driven shaft.

16; Reversinfr gearing com arising the combination oa driving sha t,' a riven shaft, a gear vcasing ixed to said driving shaft having gear elements adapted to ccnnect sa-id'sh'afts for reverse drive, a brake drum rotatably supported besideand on an extension' of said casing having operative connection with said gearing elements. brake mechanism adaptedto hold said brake drum against' rotation 'to Setl theg'earing .for reverse drive,-A `nd. clutch mechanism disposed besideY said brake dr'iim having. cao-acting.r clutch-members carried and driven by said casiiig-ezdensionA and driven shaft adapted -t'o connectsaid driving and driven shafts for i y forward drive.

17. Reversing 'gearing comprising the combination of aV driving casing, 'gear elements carried by said casing, a driven shaft arranged to be driven 'by said gearing elements, a. brake drum operatively connected witlrsaid gearing `elements and having Ya rotatable support on saidc'zasing,l brake mechanisni adapted tol hold said'brake drum against rotation whereby to set the gea-ring for reverse drive', and clutch mechanism including-co-aeting clutch members driven by said driving' casing' and driven shaft adapted Y to-con'nect said casing and shaft for forward drive.

l18.` Reversing gearing comprising the combination jof a dri-ving shaft` acasing fixed" to and rotatable with said 'driving shaft, said casinghavingian extension in which said driven 'shaft is rotatable, a spur gear fixed to said -driven shaft, a spur gear rotatably supported bv said casing-extension andv extended o'utwardb7 beyond saidcasing and=having spur gear teeth on its extended portion, a brake drum carriedby s a'id gear aindhaving internal gearl teeth which mesh with the spur gear teeth of said gear, pinion y earsrotatably carried by said casing adapted to be' revolved about and engage saidv spur ears, bra-ke 'mechanism adapted to hold said brake drum against rotation whereby to set theA gearing for reverse drive, and clutch mechanism arranged to connect said drivingand driven shafts directhr and exclude said gears for forward drive.

l0. Reversing gearing comprising the combination-of a driving casing having end walls and a hub having an annular outstanding flange connected with the casing and arranged to separate it. into front and rear cinnpartments` said hub extended outwardl'v beyond said rear compartment, :i driven shaft i'otaitabliY supported by said huh, a spur gear ixed to said'driven shaft anddisposed in said front casing compartment, a spur gear rotatably support-ed on said hub and disposed in and extended bevond said rear casing compartment, pinion gears rotatably supported by said casingr and disposed in both casingconipaitments and ada )ted to be 'revolved' about and engage.

sait spur gears. said rotatably. supported spur gear having an exposed brake drum, brake mechanism adapted to hold said brake drinn and gear from rotation. whereby to set thc-gcarng for reverse drive. and clutch mechanism comprising izo-acting clutch members carried and driven by said hub and driven shaft arranged to connect said casing and shaft for forward drive.

20. .Rei-'rinsing gearing comprising thee-omhination ot a driving casing having a hnb.y a driven shaft rotatable in said hub and having a gear fixed thereto, gearingelements carried h v said easing arranged to drive said shaft gear, brake mechanism including :i rotatable brake drum operatively associated with said gearing arranged to he held against rotation to set the gearing for reverse drive7 and clutch mechanism adapted to connect said"casing and shafts for forward drive .comprising a Set of clutch plates carried 'by and movable axially on the hub of said casing, a clutch-plate carrier xed to said driven shaft, and al set of co-acting clutch plates carried b v and axiallyv movable on said carrier.

2.1. Reversing gearing comprising the combination of a driving casing having a hub, a driven shaft rotatable in Said hub and having a gear fixed thereto, gearing ele ments carried b v said casing arranged to drive said shaft. gear. brake mechanism inclnding a rotatable brake drum opcrativeh7 associated with said gearing arranged te be held against rotation te set the gearing for reverse drive. and clutch mechanism adapted lud thrust ring having operative connection with said clntch'plates.

22. Revel-sin gearing com risi'nr the combination o? si drivin sha t, a iven shaft, L casing `Snpporte on one `of saidshafts having gearing elements contained therein adapted' to connect said shafts for reverse drive, n' casing disposedvbeside said gearing ciising having clutch mechanism enclosed therein adapted to connect s'aid 10 shafts for forward drive, and actuating mechanism for said gearing elements including a bra-ke drum disposed between said two casngs and at least partially enclosing both casings. 16 In testimony wherec, I have signed my name to this specification.

HENRY A. TUTTLE. 

